Rollup merge of #126140 - eduardosm:stabilize-fs_try_exists, r=Amanieu

Rename `std::fs::try_exists` to  `std::fs::exists` and stabilize fs_try_exists

FCP completed in tracking issue.

Tracking issue: https://github.com/rust-lang/rust/issues/83186

Closes https://github.com/rust-lang/rust/issues/83186

Stabilized API:

```rust
mod fs {
    pub fn exists<P: AsRef<Path>>(path: P) -> io::Result<bool>;
}
```

7 files changed, 9 insertions, 9 deletions

diff --git a/library/std/src/sys/pal/hermit/fs.rs b/library/std/src/sys/pal/hermit/fs.rs
index a98a1006ef4..e4e9eee044e 100644
--- a/library/std/src/sys/pal/hermit/fs.rs
+++ b/library/std/src/sys/pal/hermit/fs.rs
@@ -18,7 +18,7 @@ use crate::sys::time::SystemTime;
 use crate::sys::unsupported;
 use crate::sys_common::{AsInner, AsInnerMut, FromInner, IntoInner};
 
-pub use crate::sys_common::fs::{copy, try_exists};
+pub use crate::sys_common::fs::{copy, exists};
 
 #[derive(Debug)]
 pub struct File(FileDesc);
diff --git a/library/std/src/sys/pal/solid/fs.rs b/library/std/src/sys/pal/solid/fs.rs
index a6c1336109a..dc83e4f4b49 100644
--- a/library/std/src/sys/pal/solid/fs.rs
+++ b/library/std/src/sys/pal/solid/fs.rs
@@ -12,7 +12,7 @@ use crate::{
     sys::unsupported,
 };
 
-pub use crate::sys_common::fs::try_exists;
+pub use crate::sys_common::fs::exists;
 
 /// A file descriptor.
 #[derive(Clone, Copy)]
diff --git a/library/std/src/sys/pal/unix/fs.rs b/library/std/src/sys/pal/unix/fs.rs
index 035c92bc84b..5c4ccd32850 100644
--- a/library/std/src/sys/pal/unix/fs.rs
+++ b/library/std/src/sys/pal/unix/fs.rs
@@ -97,7 +97,7 @@ use libc::{
 ))]
 use libc::{dirent64, fstat64, ftruncate64, lseek64, lstat64, off64_t, open64, stat64};
 
-pub use crate::sys_common::fs::try_exists;
+pub use crate::sys_common::fs::exists;
 
 pub struct File(FileDesc);
 
diff --git a/library/std/src/sys/pal/unix/thread.rs b/library/std/src/sys/pal/unix/thread.rs
index 3ebf1cfd33f..619f4e4121e 100644
--- a/library/std/src/sys/pal/unix/thread.rs
+++ b/library/std/src/sys/pal/unix/thread.rs
@@ -478,7 +478,7 @@ mod cgroups {
 
     use crate::borrow::Cow;
     use crate::ffi::OsString;
-    use crate::fs::{try_exists, File};
+    use crate::fs::{exists, File};
     use crate::io::Read;
     use crate::io::{BufRead, BufReader};
     use crate::os::unix::ffi::OsStringExt;
@@ -556,7 +556,7 @@ mod cgroups {
         path.push("cgroup.controllers");
 
         // skip if we're not looking at cgroup2
-        if matches!(try_exists(&path), Err(_) | Ok(false)) {
+        if matches!(exists(&path), Err(_) | Ok(false)) {
             return usize::MAX;
         };
 
@@ -613,7 +613,7 @@ mod cgroups {
             path.push(&group_path);
 
             // skip if we guessed the mount incorrectly
-            if matches!(try_exists(&path), Err(_) | Ok(false)) {
+            if matches!(exists(&path), Err(_) | Ok(false)) {
                 continue;
             }
 
diff --git a/library/std/src/sys/pal/unsupported/fs.rs b/library/std/src/sys/pal/unsupported/fs.rs
index 6ac1b5d2bcf..474c9fe97d1 100644
--- a/library/std/src/sys/pal/unsupported/fs.rs
+++ b/library/std/src/sys/pal/unsupported/fs.rs
@@ -291,7 +291,7 @@ pub fn remove_dir_all(_path: &Path) -> io::Result<()> {
     unsupported()
 }
 
-pub fn try_exists(_path: &Path) -> io::Result<bool> {
+pub fn exists(_path: &Path) -> io::Result<bool> {
     unsupported()
 }
 
diff --git a/library/std/src/sys/pal/wasi/fs.rs b/library/std/src/sys/pal/wasi/fs.rs
index 529b82e0198..c58e6a08b37 100644
--- a/library/std/src/sys/pal/wasi/fs.rs
+++ b/library/std/src/sys/pal/wasi/fs.rs
@@ -17,7 +17,7 @@ use crate::sys::time::SystemTime;
 use crate::sys::unsupported;
 use crate::sys_common::{AsInner, FromInner, IntoInner};
 
-pub use crate::sys_common::fs::try_exists;
+pub use crate::sys_common::fs::exists;
 
 pub struct File {
     fd: WasiFd,
diff --git a/library/std/src/sys/pal/windows/fs.rs b/library/std/src/sys/pal/windows/fs.rs
index 629ff114b5a..cc68f5ef5f0 100644
--- a/library/std/src/sys/pal/windows/fs.rs
+++ b/library/std/src/sys/pal/windows/fs.rs
@@ -1531,7 +1531,7 @@ pub fn junction_point(original: &Path, link: &Path) -> io::Result<()> {
 }
 
 // Try to see if a file exists but, unlike `exists`, report I/O errors.
-pub fn try_exists(path: &Path) -> io::Result<bool> {
+pub fn exists(path: &Path) -> io::Result<bool> {
     // Open the file to ensure any symlinks are followed to their target.
     let mut opts = OpenOptions::new();
     // No read, write, etc access rights are needed.